South Korea is home to more than 460,000 ethnic Koreans who have migrated from China.
Their ethnic homeland is only a temporary home for the immigrants, however, because they are only allowed to stay for five years.
Thousands of the arrivals in Seoul, whose visas are set to expire, are now concerned about deportation.
Al Jazeera's Harry Fawcett reports from Seoul.
Source: Al Jazeera